Paper material and composition for treating the same



earner @Wlth WILB'UR 1L. WRIGIBIT, 0F FULTON, NEW YORK.

PAPER MATERIAL AND CGMPOSITION EUR TREATING THE SATdE.

1V0 Drawing.

T 0 all whom it may concern Be it known that I, WILBUR WmeH'r, a citizen of the United States of America, and resident of Fulton, county of Oswego, and State of New York, have invented certain new and useful Improvements in and Relating to Paper Materials and Compositions for 'lreating the Same, of which the following is a specification.

This invention relates to certain improvements in paper material and compositions for treating the same; and the objects and nature of the invention will be readily understood by those skilled in the art in the li ht of the following explanations of What l now believe to be the preferred embodiments of my invention.

An object of the invention is to provide paper material with an advantageous and officient coating insoluble in grease and particularly intended for the inner surfaces of paper containers that are to receive certain food products of a grease-like nature; and to provide a composition to form such coating particularly adapted for contact with such food products and to establish a barrier against the passage of such products through the paper and to reduce to the minimum possibility of the outer surfaces of the paper or paper containers becomingobjec-' tionably stained or discolored by the action of the grease-like contents thereof.

With these and other objects in view my invention consists in paper material having a peculiar coating and in the compositions substantially as hereinafter set forth and specified, for forming such coatings.

lln the formation of the composition for application to the paper material, I employ an adhesive, gelatinous or body for ing so- A composition for this purpose, can in-' lude. ingredients about as follows, to wit: a

Application filed May 17,

Specification of Letters Eatent. Pgm'gcgnfgggdl Jung 2(1)), 1159722,

1920. Serial No. 382,145.

casein. solution, sugar (or glucose), glycerine, and water.

However, instead of casein I can employ gelatine or various gums and the like, and instead of glycerine, I can employ cocoanut oil (or some other oil possessing like quali-' ties) emulsified or otherwise'treated to enable the same to mix into the solution.

As an example, a composition for my purposes can be formed by water (about thirtyone pounds, four ounces more or less) to which is added ammonia (about one pound, three ounces, more or less), then slowly sift casein (about five pounds, ten ounces, more or less) into the water, and add glycerine (about twelve ounces, more or less), and sugar or glucose (about twelve pounds, eight ounces more or less).

This composition is stirred and kept at a temperature of about one hundred and seventy-five degrees Fah. for about thirty minutes. During this period l preferably remove the scum from the hot solution. This solution (composition) is applied preferably while hot to the paper, mamrial or to the inner surfaces of paper containers, and any suitable means can be employed, or method followed, in applying the composition. in fact, the composition can be applied to paper stock or fibrous material during the process of manufacturing paper so that the finished paper will be impregnated with the flexible adhesive like substance insoluble in grease and thereby establishing a grease barrier on.

or within the paper.

ployed to aid in dissolving the casein, al-' though any other suitable solvent for the casein can be employed. Where gelatine is employed instead of casein, the ammonia is not. employed, although approximately the same proportion of gelatine will be employed as casein, in the example given.

l do not herein claim broadly paper material coated with a composition having a preponderating percentage of sugar, nor said c0mp0siti0n, as such is claimed in my'application filed July 11, 1918, S. No. 2%,472. Nor do 1 herein claim broadly cocoanut oil in grease proofing compositions as such is claimed in my application filed May 10, 1920, Se. No. 380,365, v

What I claim is 1. Paper material embodying a grease barrier comprising casein, sugar in large proportion, and aflexibility ingredient.

2. Paper material having a coating embodying casein and a prep'onderating percentage of sugar.

3. aper material having a flexible coating formed by the application thereto of a sugar solution including a relatively small proportion of casein.

4; Paper material treated with a solution of casein, sugar and a flexibility ingredient.

. 5. grease proofing composition comprising casein, a flexibility ingredient and .a relatively large proportion of sugar.

6. A grease 1proofing composition comprising casein, g ycerine, and sugar in large proportion. V Y

7. Paper material treated with a grease proofing composition comprising a flexibility ingredient, casein, and sugar, the proportion of sugar exceeding the proportion of casein.

8. A grease proofing composition comprising sugar in the proportion of approximately twelve pounds, casein 1n,the proportion of approximately five pounds, a relativel -small proportion of flexibility ingredlent, and a solvent.

WILBUR L. WRIGHT. 

